.box1{
    overflow: hidden;
    position: relative;
}
.box1 .tab{
    display: flex;
    flex-direction: row;
    justify-content: space-around;
}
h1{
    height:60px;
    font:bolder 50px/60px "楷体";
    color:white;
    text-shadow: 5px 5px 10px black;
    text-align: center;
}
.box1 .tab li{
    height: 50px;
    width: 200px;
    background-color: lightpink;
    margin-top: 50px;
    text-align: center;
    font-size: 20px;
    line-height: 50px;
    position: relative;
    border-radius: 10px;
    box-shadow: 10px 10px 20px black;
}
.box1 .tab li::before{
    content:"Li Yang";
    font: bolder 30px/50px "楷体";
    color:white;
    text-align: center;
    display: block;
    opacity: 0;
    height: 50px;
    width: 200px;
    position: absolute;
    background-color: rgba(0,0,0,0.5);
    z-index: 1000;
    border-radius: 10px;
    transition: all 0.4s linear ;
}
.box1 .tab li:hover::before{
    /*height:50px;*/
    opacity:0.8;
}
.tabCon{
    height: 400px;
    width: 4400px;
    margin-top: 25px ;
}
.tabCon li{
    width: 1100px;
    height: 370px;
    float: left;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: space-around;
}
.tabCon li div{
    width: 40%;
    height: 140px;
    background-color: darkorange;
    border-radius: 10px;
    text-align: center;
    font:bolder 30px/150px "楷体";
}








